This book presents a detailed pedagogical description of the 5G commercial wireless communication system design, from an end to end perspective, by those that were intimate with its development. The exposition only assumes that the reader is passingly familiar with LTE and builds upon that knowledge. By comparing and contrasting NR with LTE, it allows for quick mastering of 5G. As such it gives concise and highly accessible description of the key technologies in the 5G physical layer, radio access network layer protocols and procedures, how the 5G core and EPC is integrated into the radio access network, how virtualization, slicing and edge computer will fundamentally change the way we interact with the network, as well as 5G spectrum issues. The 2nd edition of this book significantly enhances and updates the first edition by adding 5G security and Release-16 developments. Loosely speaking, 5G Release-15 can be characterized as being optimized for the cellular carrier eMBB service while 5G Release-16 is the beginning of the optimization of 5G for the vertical industries. It mainly focused on the support of the vehicular vertical and Industrial Internet of Things. As such, we have significantly altered the first edition to cover the key features standardized in Release-16 including: URLLC, V2X, IIoT, enhanced MIMO, unlicensed access, positioning, power savings and IAB. On the network side, detailed discussion covers NR security as well as the newly standardized access traffic steering, non 3GPP access switching and splitting features, non 3GPP access network support and private networks. Engineers, computer scientists and professionals from those with a passing knowledge of 4G LTE to experts in the field will find this book to be a valuable asset. They will gain a comprehensive understanding of the end to end 5G commercial wireless system. Advanced-level students and researchers studying and working in communication engineering, who want to gain an understanding of the 5G system (as well as methodologies to evaluate features and technologies intended to supplement 5G) will also find this book to be a valuable resource.
IN THE NEWSWeimin Wu: pioneer physicist on Chinese science's turbulent past, promising futureTimes Higher Education, 25 February 2016While the first 30 years of new China's scientific development was a self-reliant era marked by the detonations of the atomic bomb, the hydrogen bomb, and the launch of the first artificial satellite, the second 30 years after the reform and opening up was signified by the introduction of the Internet to China. Weimin Wu is a unique legendary figure whose career spanned both periods. He not only contributed to the bomb and satellite projects, but also sent out the email from China to Switzerland in 1986, which was listed as the first event in the history of China's Internet development. The Tiananmen Square Protest in 1989 changed his life's trajectory, leading him to eventually immigrate to the US. His personal emotional life is also remarkable. With his experiences immersed in both Eastern and Western cultures, Wu came to believe in the convergence theory of social development, which provides a refreshing perspective for the readers. The autobiography records the details of his legendary life stories, from taking pictures with the Chinese leader Mao Zedong, to shaking hands with Deng Xiaoping; from being removed from the Institute of High Energy Physics, to the repealing of his Chinese passport. The story line is full of engaging ups and downs. In that turbulent era, Wu's rich emotional experiences and love stories were also a mirror for the Chinese society, with some details comparable to the plots of suspense novels and movies. The book is well illustrated with many pictures and flows smoothly with a simple writing style. The stories are factual and moving, all too realistic. The author has sincerely revealed his true self to the reader, and at the same time, faithfully described that period of history, giving the reader a grasp on the true workings of history. His comparison of the Eastern and Western cultures, analysis of science and superstition, interpretation of religion and arts, and his 'convergence' theory of social development, are all unique and insightful. This book faithfully tells Weimin's professional and personal life on the cusp and takes readers on a journey to explore true history through an ordinary person's stories.
A state-of-the-art discussion of modern grid inverters In Control and Filter Design of Single Phase Grid-Connected Converters, a team of distinguished researchers delivers a robust and authoritative treatment of critical distributed power generation technologies, grid-connected inverter designs, and renewable energy utilization. The book includes detailed explanations of the system structure of distributed generation (DG)-grid interface converters and the methods of controlling DG-grid interface voltage source converters (VSCs) with high-order filters. The authors also explore the challenges and obstacles associated with modern power electronic grid-connected inverter control technology and introduce some designed systems that meet these challenges, like the grid impedance canceller. Readers will discover demonstrations of basic principles, guidelines, examples, and design and simulation programs for grid-connected inverters based on LCL/LLCL technology. They will also find: A thorough introduction to the architectures of DG-grid interfacing converters, including the challenges of controlling DG-grid interfacing VSCs with high-order filters Comprehensive explorations of the control structure and modulation techniques of single-phase grid-tied inverters Practical discussions of an LLCL power filter for single-phase grid-tied inverters Fulsome treatments of design methods of passive damping for LCL/LLCL-filtered grid-tied inverters Perfect for researchers, postgraduate students, and senior level undergraduate students of electrical engineering, Control and Filter Design of Single Phase Grid-Connected Converters will also benefit research & development engineers involved with the design and manufacture of power electronic inverters.
This book is a labor of love for Dr Wu Weimin whose favorite photography subjects are ordinary events which capture the heart of the common folks. The cameras Dr Wu uses may not be the most sophisticated but the images he has taken are truly striking. His award-winning collections of photographs are very well received worldwide. The introduction written by Dr Rick Vidal of Fermilab was endorsed by Dr Leon Lederman, Nobel Laureate in Physics (1988). Being a physicist by training, Dr Wu was among the pioneer scientists who helped to develop China's first atomic bomb and to launch its first satellite. He also participated in building the first Chinese electron-positron collider. Another extraordinary feat is that he sent out the very first e-mail from China on 25 August 1986.
This book focuses on 3D printing and molding/ copying technologies and approaches, which innovatively proposes the concept of polymer 3D copying technology. It introduces the two technologies of polymer 3D printing and 3D copying by analogy and elaborates the core principles and processes of polymer 3D copying technology, the composition, basic parameters and structure design of polymer 3D copying machines, precision control methods, defect generation mechanism and solutions of polymer 3D copying products, and also discussed the future development of polymer 3D copying technology. The novel concept of 3D copying is one of the major features of the book, which is particularly suited for readers who are interested in rapid prototyping and molding. The book is based on both traditional and new knowledges, with novel content and concept, focusing on both principles and engineering practice. It systematically reflects the content and application of polymer 3D printing and 3D copying technology, which can benefit researchers, engineers, and students of related majors engaged in the fields of polymer processing, rapid prototyping, 3D printing and molding/ copying, etc.
Under adverse macroeconomic conditions, the potential realization of corporate sector vulnerabilities could pose major risks to the economy. This paper assesses corporate vulnerabilities in Indonesia by using a Bottom-Up Default Analysis (BuDA) approach, which allows projecting corporate probabilities of default (PDs) under different macroeconomic scenarios. In particular, a protracted recession and the ensuing currency depreciation could erode buffers on corporate balance sheets, pushing up the probabilities of default (PDs) in the corporate sector to the high levels observed during the Global Financial Crisis. While this is a low-probability scenario, the results suggest the need to closely monitor vulnerabilities and strengthen contingency plans.
About a renegade pirate, a ruthless man set forth to pillage and plunder across the galaxy. Set in motion a plan of revenge against a man named RC Steel. In this story, a friend will be found that was lost, their will be betrayal of another and a destruction of a homeworld. Revenge like no other and a great love of all centuries, that RC Steel must survive to save his great love in the " Pirates of the Stars.
Everyone is already in the era of big data. It is gradually changing people's lifestyles. Therefore, it is necessary to explore the development path of big data, balance the relationship between technology, policy, and the market, so that it can better serve human society.This comprehensive book introduces what big data is, big data processing systems, big data management technologies, and big data analysis methods in an easy-to-understand language. It explains the specific applications of big data in smart government affairs, economic development, and the improvement of people's livelihood and welfare.
Nanoimprint Lithography: An enabling process for nanofabrication presents a comprehensive description of nanotechnology that is one of the most promising low-cost, high-throughput technologies for manufacturing nanostructures, and an emerging lithography candidates for 22, 16 and 11 nm nodes. It provides the exciting, multidisciplinary field, offering a wide range of topics covering: principles, process, material and application. This book would be of specific interest for researchers and graduate students in the field of nanoscience, nanotechnology and nanofabrication, material, physical, chemical, electric engineering and biology. Dr. Weimin Zhou is an associate professor at Shanghai Nanotechnology Promotion Center, China.
Research into contact problems continues to produce a rapidly growing body of knowledge. Recognizing the need for a single, concise source of information on models and analysis of contact problems, accomplished experts Sofonea, Han, and Shillor carefully selected several models and thoroughly study them in Analysis and Approximation of Contact P
Learn quick and effective techniques to get up and running with building blockchain including Ethereum and Hyperledger Fabric. Key FeaturesUnderstand the key concepts of decentralized applications and consensus algorithmsLearn key concepts of Ethereum and Solidity programmingPractical guide to get started with build efficient Blockchain applications with Ethereum and HyperledgerBook Description Blockchain is a technology that powers the development of decentralized applications.This technology allows the construction of a network with no single control that enables participants to make contributions to and receive benefits from the network directly. This book will give you a thorough overview of blockchain and explain how a blockchain works.You will begin by going through various blockchain consensus mechanisms and cryptographic hash functions. You will then learn the fundamentals of programming in Solidity – the defacto language for developing decentralize, applications in Ethereum. After that, you will set up an Ethereum development environment and develop, package, build, and test campaign-decentralized applications.The book also shows you how to set up Hyperledger composer tools, analyze business scenarios, design business models, and write a chain code. Finally, you will get a glimpse of how blockchain is actually used in different real-world domains. By the end of this guide, you will be comfortable working with basic blockchain frameworks, and develop secure, decentralized applications in a hassle-free manner. What you will learnUnderstand how blockchain hashing worksWrite and test a smart contract using SolidityDevelop and test a decentralized applicationBuild and test your application using Hyperledger FabricImplement business network using Hyperledger ComposerTest and interact with business network applicationsWho this book is for The book is for developers, analysts, or anyone looking to learn about Blockchain in a quick and easy manner.
A complete guide to understanding, developing, and testing popular security-token smart contracts Key FeaturesUnderstand key Blockchain and Ethereum platforms conceptsStep-by-step guide to developing STO smart contracts on EthereumMonetize digital tokens under various U.S. securities lawsBook Description The failure of initial coin offerings (ICOs) is no accident, as most ICOs do not link to a real asset and are not regulated. Realizing the shortcomings of ICOs, the blockchain community and potential investors embraced security token offerings (STOs) and stablecoins enthusiastically. In this book, we start with an overview of the blockchain technology along with its basic concepts. We introduce the concept behind STO, and cover the basic requirements for launching a STO and the relevant regulations governing its issuance. We discuss U.S. securities laws development in launching security digital tokens using blockchain technology and show some real use cases. We also explore the process of STO launches and legal considerations. We introduce popular security tokens in the current blockchain space and talk about how to develop a security token DApp, including smart contract development for ERC1404 tokens. Later, you'll learn to build frontend side functionalities to interact with smart contracts. Finally, we discuss stablecoin technical design functionalities for issuing and operating STO tokens by interacting with Ethereum smart contracts. By the end of this book, you will have learned more about STOs and gained a detailed knowledge of building relevant applications—all with the help of practical examples. What you will learnUnderstand the basic requirements for launching a security token offeringExplore various US securities laws governing the offering of security digital tokensGet to grips with the stablecoin concept with the help of use casesLearn how to develop security token decentralized applicationsUnderstand the difference between ERC-20 and ERC-721 tokensLearn how to set up a development environment and build security tokensExplore the technical design of stablecoinsWho this book is for This book is ideal for blockchain beginners and business user developers who want to quickly master popular Security Token Offerings and stablecoins. Readers will learn how to develop blockchain/digital cryptos, guided by U.S. securities laws and utilizing some real use cases. Prior exposure to an Object-Oriented Programming language such as JavaScript would be an advantage, but is not mandatory.
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